602 



FORCING 



FORESTRY 



^-;-«^k:^ 



855. Forsythia suspensa. vax. 

 Sieboldi (X3'.2). 



rectly in a Forcing-box or pots, ^^eneral]y made over the 

 pipes in the hottest house, whero ii tt-ntperature of bO° to 

 yS^ F. can be luaiutaiDed. Tliey are tirsc soaked in water 

 for a day or two and then Icept in this jieavy heat until 

 flower biHls are well developed (Fi?:. 8.18). Tulips, liya- 



c i n th s an d 

 f--.-s.^. ^ otherhulbs, 



|\ "N^ ■'^■^> :/'' sometimes 



or lilac, can 

 also Ije hur- 

 ried up in 

 such a box, but it is 

 dangerous, and not 

 good practice; better 

 and more lasting 

 flowers come with or- 

 dinary trea'tment. 

 Trilliiims (Fig. 854) 

 □ d various early- 

 flowering wild plants 

 may be forced with 

 satisfaction. 



Although no rules 

 can be given for the 

 time required in Forc- 

 ing, it is knowledge 

 not hard to acquire 

 with even surprising 

 exactness. Nothing 

 is likely to require 

 more than three 

 mouths in houses 

 ranging from 45° to 

 55° F^-i. e., after 

 bringing in from the 

 pits. A month or six 

 weeks is good time to 

 allow in February 

 and March, but with the same plants and temperatures, 

 more time would be needed earlier; with the advance of 

 the season, the work is quicker and less uncertain. 

 There is great difference in plants. Rhododendrons (the 

 hybrids) require eight weeks or more, but one species 

 will often bloom in March, within twenty-four hours. 

 Plants like the rose, whicli must make a growth before 

 the buds form, take more time thau azaleas. The differ- 

 ence between dull and bright weather is an important 

 factor, Init with extra firintr, or the use of the Forcing- 

 box, these matters even up, and the average time of 

 flowering is wonderfully even. In this work, a man with 

 good plant sense is most likely to succeed. 



B.M.Watson. 



FORESTlfiKA (after Forestier, a French physician). 

 Syn. Adelia. Otedeece. Deciduous, rarely evergreen 

 trees or shrubs, with opposite, entire or serrate, gener- 

 ally rather small Ivs., inconspicuous yellowish fls. and 

 small black or bkiish berries ; without much decorative 

 value, and but 7'arely cultivated. They cannot be grown 

 North, except F. aciimhiaia arnl F. lign^fr'nia, which 

 are tolerably hardy in New England. They grow in al- 

 most any soil, and are propagated by seeds and layers. 

 About 15 species in N. Amer.. from Illinois south; 

 also in Mex. and W. Indies. Fls. dioecious, apetalous, 

 with or without calyx, iti small, axillary elustt-rs in eai ly 

 spring, before the Ivs. ; stamens 2-4: fr. a small, 

 mostly black, ]- or 2-seeded berry. 



acuminata, Poir. [AdWta acumiuitta, lsi\Q\\x.). De- 

 ciduous slirub, to 10 ft. high, sometimes spiny, glabrous: 

 Ivs. slender jfetioled, ovate-ohlong or ovate-lanceolate, 

 remotely serrate, 'iy^-^ in. lontr : staminate fls. in dense 

 clusters ; idstiliate fls. in short panicles : fr. narrow. 

 oblong or cylindrical, falcate, .-irure. i„ in. Icng. W. 

 Illinois to Texas. Michx. Fl. Ilor. Amer. L':225. B.B. 

 2:603. 



ligrustrina, Poir. [Adelhr llqfistnun, ls\\i-\\x. ). Decidu- 

 ous shrul), to ft., pubescent; Ivs. elliptic-obovate t(. 

 oblong, obtuse, appressed-serrulate, about 1 in. long : 

 lis. in fascicles : fr. sessile, short-ovoid, obtuse, ^i in. 

 iong. Tenn. to Fla. and Ala. 



F. Ndo-Mexicdna, Gray. Shnd). t.. 10 ft.: Ivs. spHlbukiU', al- 



most entire, usually glabrous, grayish green and rather t 

 fr. ovate or short-oblong, obtuse, 3-f)iii- Texas to N. Me. 

 Colorado. Alfred Rehd 



FORESTRY is the rational treatment of forests; 

 treatment nuiy vary with the object in view. Fc 

 may sul)serve various objects, giving rise to 

 classes oC forests: they furnish wood materials fo 

 ixvtii — tinpply forests ; they furnish a soil cover, \ 

 prevents the blowing of the soib and formatit 

 sand dunes, or which retards the erosion and was 



856. Flowers of Forsythia suspensa, var. Fortunei 



Natural size. 



of the soil and regulates the waterflow, or which a( 

 a barrier to cold or hot winds, and exercises other 

 ticial influences on climate and surroumlings— p 

 fion fori.'sfs ; or finally, they furnish enjoyment t 



